Socket 3

Updated: 08/02/2020 by Computer Hope
CPU socket 3

The Intel Socket 3 is a processor socket with 237-pin holes in 19 by 19 rows, and ran at 3.3v and 5v. The Socket 3 socket was compatible with the Intel 486SX, 486DX, 486DX2, 486DX4, and OverDrive processors. To the right is an illustration of the Socket 3 socket.

Unlike the Socket 2 processor, the Socket 3 processor has additional pins in the bottom-left to help provide better keying and prevent the processor from being installed improperly.


This socket is not compatible with 3v processors and often was found on motherboards that had a coprocessor socket. Also, this socket cannot determine the voltage provided and must rely on a jumper that allows you to select either 3.3v or 5v.

80486, CPU terms, OverDrive, Socket